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(A) Cement; 1. Specification for 33,43,53 Grade ordinary Portland cement IS 269 - 2015 2. Specification for Rapid hardening Portland cement IS 8041 - 1990 3. Specification for Portland Pozzolona cement IS 1489 (part 1&2) 1991 4. Methods of physical test for hydraulic cement IS 4031 - 1988 5. Method of chemical analysis of hydraulic cement IS ...
A reduction of 40 percent of Portland cement in the concrete mix is usually feasible when replaced with a combination of pozzolanic materials. Pozzolans can be used to control setting, increase durability, reduce cost and reduce pollution without significantly reducing the final compressive strength or other performance characteristics.
Pozzolana from Mount Vesuvius volcano, Italy. Pozzolana or pozzuolana (/ ˌ p ɒ t s (w) ə ˈ l ɑː n ə / POT-s(w)ə-LAH-nə, Italian: [potts(w)oˈlaːna]), also known as pozzolanic ash (Latin: pulvis puteolanus), is a natural siliceous or siliceous-aluminous material which reacts with calcium hydroxide in the presence of water at room temperature (cf. pozzolanic reaction).
Cement bonded wood fiber materials can be classified as low density, medium density and high density. The density of the material will determine to a large extent, the various properties of the end product. Other factors determining the overall performance of a cement bonded wood fiber material are: Wood particle type; Wood particle gradation
Portland cement is the most common type of cement and is a general purpose cement. The product is made with a combination of calcium, silicon, aluminum, iron, and other ingredients.
Portland cement is the most common type of cement in general use around the world as a basic ingredient of concrete, mortar, stucco, and non-specialty grout. It was developed from other types of hydraulic lime in England in the early 19th century by Joseph Aspdin , and is usually made from limestone .
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